Finnish (Finland) (fi-FI)

Complete reference for the fi-FI locale — live Intl API output, CLDR plural rules, and framework config snippets.

ロケールリファレンス

Finnish (Finland)

ロケール情報

BCP 47 コードfi-FI

現地語での名称Suomi (Suomi)

英語名Finnish (Finland)

言語fi

地域FI

文字体系Latn

文字方向左から右（LTR）

CLDR の複数形カテゴリone, other

推定話者数~5,500,000

Intl API Live Output

DateTimeFormat

Short26.8.2026

Medium26.8.2026

Long26. elokuuta 2026

Fullkeskiviikko 26. elokuuta 2026

NumberFormat

Decimal1 234 567,89

Currency (USD)9,99 $

Percent75 %

Compact1,2 milj.

RelativeTimeFormat

3 päivää sitten

Output for: -3 days ago

ListFormat

apples, oranges ja bananas

Conjunction list: apples, oranges, bananas

CLDR Plural Rules

Categories supported by fi-FI: one, other

oneExample number: 1

→ one

otherExample number: 100

→ other

Framework Config Snippets

next-intl

// next-intl configuration
// next.config.ts
import createNextIntlPlugin from 'next-intl/plugin';
const withNextIntl = createNextIntlPlugin();
export default withNextIntl({});

// i18n/routing.ts
import { defineRouting } from 'next-intl/routing';
export const routing = defineRouting({
  locales: ['fi-FI', 'en'],
  defaultLocale: 'en',
});

react-intl

// react-intl configuration
import { IntlProvider } from 'react-intl';
import messages from './messages/fi-FI.json';

function App() {
  return (
    <IntlProvider locale="fi-FI" messages={messages}>
      {/* your app */}
    </IntlProvider>
  );
}

i18next

// i18next configuration
import i18n from 'i18next';
import { initReactI18next } from 'react-i18next';

i18n
  .use(initReactI18next)
  .init({
    lng: 'fi-FI',
    fallbackLng: 'en',
    resources: {
      'fi-FI': {
        translation: require('./locales/fi-FI/translation.json'),
      },
    },
  });

export default i18n;